Key Monastery is a monastery belonging to the Gelugpa school of Tibetan Buddhism, located at an elevation of 4,166 m (13,668 ft) on a hill rising above the Spiti valley in the northern Indian state of Himachal Pradesh. Said to have been founded in the 11th century, it is the largest monastery in Spiti, housing hundreds of monks. This view shows the monastery in winter, overlooking the snow-covered Spiti river valley with the Himalayas in the background.Photograph credit: Kulbhushan Suryawanshi